Hydraulic turbine suspending device

ABSTRACT

A hydraulic turbine suspending device is provided which facilitates the positioning of a hydroelectric generator in a waterway, and which is easy to work on. The hydraulic turbine suspending device is a support that suspends a hydraulic turbine (10) in a waterway by laterally bridging the same, and comprises a combination of a suspending beam (2) positioned in parallel with the upstream and downstream sides of the waterway; a plurality of stanchions (5) that support the edges of the suspending beam (2) in a horizontal position on the outside of the waterway; and a floor plate (6) provided in a tensioned state to the suspending beam (2).

TECHNICAL FIELD

The present invention relates to a suspension device for disposing awaterwheel in a water channel and relates to a waterwheel suspendingdevice that enables a waterwheel to be easily disposed is a short periodof time in any of water channels having different widths.

BACKGROUND OF THE INVENTION

Conventionally, PTL 1 describes an example in which for disposition ofwaterwheels in a flume, horizontal beams are transversely provided so asto bridge the flume via locking members arranged on upper surfaces ofside wails of a water channel to cause the waterwheels to be supportedby the horizontal beams.

CITATION LIST Patent Literature

[PTL 1] JP 2015-14219 A

SUMMARY OF THE INVENTION Problems to be Solved by the Invention

Where locking members such as described in PTL 1 above are disposed onupper surfaces of side walls of a water channel, since different flumeshave different water channel widths, the locking members may fail to bearranged and a length of the horizontal beam needs to be adjusted foreach case.

An object of the present invention is to provide a waterwheel suspendingdevice that can be installed in a short period of time regardless of awidth of the water channel and is excellent in ease of work and safety.

Means for Solving the Problems

Specific contents of the present invention are as follows.

(1) A waterwheel suspending device that is a suspension support devicetransversely provided so as to bridge opposite banks of a water channelto suspend a waterwheel, the device comprising a combination ofspliceable suspension main bodies arranged in parallel on an upstreamside and a downstream side of the water channel, respectively, aplurality of footings for horizontally supporting respective endportions of the suspension main bodies outside the water channel and afloor plate stretched across upper surfaces of the suspension mainbodies.

(2) The water wheel suspending device according to (1) above, wherein aholding body including a fitting portion that maintains an end portionof the relevant suspension main body horizontally is provided on anupper surface of each of the footings.

(3) The waterwheel suspending device according to (1) or (2) above,wherein a mount portion for fixing a relevant holding body is formed onan anchor portion of each of the footings.

(4) The waterwheel suspending device according to any of (1) to (3)above, wherein each of the footings includes a threaded rod provided inan upright manner in an upper surface of a relevant mount portion.

(5) The waterwheel suspending device according to any of (1) to (4)above, wherein each of the suspension main bodies is configured so thata plurality of suspension main bodies can be joined in series via ajoining element.

Advantages of the Invention

The present invention provides the following advantages.

Since the invention stated in (1) above includes a combination ofspliceable suspension main bodies, footings and a floor plate, awaterwheel can easily be disposed in a short period of time in a flumein any geographical condition by merely digging foundation holes in theground besides a water channel, installing the footings, fixingextremity portions of the suspension main bodies to the footings tocause the suspension main bodies to be transversely provided so as tobridge the footings and stretching the floor plate over the suspensionmain bodies.

In the invention according to (2) above, a holding body including afitting portion that maintains an end portion of the relevant suspensionmain body horizontally is provided in an upper surface of each of thefootings, and thus, the extremity portions of the suspension main bodiescan easily and firmly be fixed to the holding bodies by fitting theextremity portions of the suspension main bodies in the holding bodies.

In the invention according to (3) above, a mount portion for fixing arelevant holding body is formed on an anchor portion of each of thefootings, the suspension main bodies can firmly be fixed by burying theanchor portions in the ground and fixing the holding bodies to exposedupper surfaces of the mount portions.

In the invention according to (4) above, each of the footings includes athreaded bolt provided in an upright manner in an upper surface of arelevant mount portion, and thus, the holding bodies can firmly be fixedby the threaded bolts.

In the invention according to (5) above, each of the suspension mainbodies is configured so that a plurality of suspension main bodies canbe joined in series via a joining element, and thus, where the flume hasa wide width, suspension main bodies can be joined via a joining elementaccording to the width of the flume and thus can easily be installed.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a vertical front sectional view of an embodiment of thepresent invention;

FIG. 2 is a side view of FIG. 1 with some parts cut out;

FIG. 3 is a plan view of a suspension main body and a holding body inFIG. 1;

FIG. 4 is a front view of a suspension main body and a holding body inFIG. 1;

FIG. 5 is a perspective view of a holding body in FIG. 1;

FIG. 6 is a perspective view of a footing in FIG. 1;

FIG. 7 is a plan view of the waterwheel suspending device in FIG. 1transversely provided so as to bridge a water channel;

FIG. 8 is a perspective view of a holding body according to a secondembodiment; and

FIG. 9 is a perspective view of a footing according to the secondembodiment.

DESCRIPTION OF EMBODIMENTS

Embodiments of the present invention will be described with reference tothe drawings. FIG. 1 is a front view of a waterwheel suspending device 1of the present invention transversely provided so as to bridge a flume Rto suspend waterwheels. FIG. 2 is a side view of the waterwheelsuspending device 1 with some parts cut.

The waterwheel suspending device 1 includes a plurality of suspensionmain bodies 2, holding bodies 3 each fixedly supporting an extremity ofthe relevant suspension main body 2 at a relevant side of the flume R,footings 5 disposed on opposite banks of the water channel, each of thefootings 5 fixedly supporting the relevant holding body 3 at an uppersurface thereof, joining elements 4 each joining the relevant suspensionmain body 2 and the relevant holding body 3, and a floor plate 6stretched across upper surfaces of the suspension main bodies 2.

FIG. 3 is a plan view of the suspension main body 2 and the holding body3 with some parts cut out and FIG. 4 is a front view of the same. Thesuspension main body 2 is, for example, a pipe body having a rectangularsectional shape that is 10 cm wide and 20 cm high and have a length of,for example, 1 m, and a plurality of suspension main bodies 2 can foejoined in series via a joining element 4. Also, non-illustrated screwholes for fixing the floor plate 6 are provided in the upper surface ofthe suspension main body 2. For enhancement in durability, for example,an FRP protection layer is formed on surfaces of the suspension mainbody 2.

The joining element 4 is a rectangular block having a size that allowsthe joining element 4 to be fitted in a pipe hole 2A of the suspensionmain body 2 and a fitting portion 3A of the holding body 3, and boltholes 4A corresponding to bolt holes 2B in an end portion of thesuspension main body 2 and bolt holes 3E of the holding body 3 areprovided in the joining element 4.

FIG. 5 is a perspective view of the holding body 3. On an upper surfaceof a base 3A, horizontal flanges 3C, 3C are provided in a projectingmanner in the front and the rear of a lower portion of a cube includinga fitting portion 3B formed in a side surface of one side. Bolt holes 3Dand 3E are provided through front and rear walls of the fitting portion3B and in the flanges 3C, respectively.

The footing 5 illustrated in FIG. 6 includes an elongated anchor portion5B provided in a descending manner on an area on the central side of alower surface of a cuboidal mount portion 5A including an upper surfacehaving a dimension that is slightly larger than a lower surface of theholding body 3, and is formed of cement concrete and includesnon-illustrated reinforcing steel bars buried therein.

In the upper surface of the mount portion 5A, threaded rods 5C, 5C to befitted in bolt holes 3D in the flanges 3C of the holding body 3 aredisposed, and the bolt holes 3D in the flanges 3C of the holding body 3are fitted to the threaded rods 5C and fastened to the threaded rods 5Cvia nuts.

Where the flume R has a wide width, the plurality of suspension mainbodies 2 can be joined via the joining element 4. In FIG. 1, twosuspension main bodies 2, 2 are joined via the joining element 4.

The waterwheel suspending device 1 formed as described above can easilybe constructed at any of flumes R having different widths under any ofdifferent geographical conditions. A method for constructing thewaterwheel suspending device 1 will be described below.

As illustrated in FIG. 1, at a site at which waterwheel devices 10 areintended to be installed, a length of the suspension main bodies 2 isdetermined so as to be suited to a width of a flume R, and positions atwhich holding bodies 3 to which end portions of the suspension mainbodies 2 are fixed are determined and a foundation hole 7 that is 20 cmin diameter and 30 cm deep is dug in ground G of the site.

A bottom of the foudation hole 7 is tamped down and a cement slurry ispoured onto the bottoms so as to have thickness of, for example, around10 cm to form concrete bottom slab 8. In this case, a hard concreteblock prepared in advance may be provided.

Next, the anchor portion 5B of the footing 5 is inserted to, andpositioned in, the foundation hole 7, a cement fluid is poured aroundthe anchor portion 5B in the foundation hole 7 with an upper surface ofthe footing 5 kept horizontally and then is cured into a concrete base9. Work similar to the above is performed on ground G of the oppositeband.

In this case, where the flume R has a narrow width, as illustrated inFIG. 1, a procedure in which the plurality of suspension main bodies 2,2 are joined, each of opposite ends of the joined suspension main bodies2, 2 are fixed to the holding bodies 3, 3, the anchor portions 5B, 5B ofthe footings 5, 5 are inserted to the respective foundation holes 7, 7with the footings 5, 5 fixed to bottoms of the holding bodies 3, 3 andconcrete is then poured may be employed.

FIG. 7 is a plan view of the waterwheel suspending device 1 in a statein which the waterwheel suspending device 1 is transversely provided soas to bridge the flume R. Two suspension main bodies 2 are arranged inparallel on the upstream side and the downstream side, respectively. Aspace between the suspension main bodies 2 arrange in parallel is set soas to be suited to a size of the waterwheel devices 10 to be installed.

Where the waterwheel devices 10 to be suspended are large in size, threeor more suspension main bodies 2 can be arranged in parallel to respondto such case.

The floor plate 6 is screw-fastened to the upper surfaces of thesuspension main bodies 2. The floor plate 6 may be formed of anarbitrary material such as metal, synthetic resin or wood as long asfloor plate 6 can support the waterwheel devices 10. In the downstreamside of the floor plate 6, installation holes 6A having a size thatenables the waterwheel devices 10 to be inserted into and pulled outtherefrom are provided and in the upstream side of the same, holdingholes 6B holding suspension pipes 13 for the waterwheel devices 10 areprovided.

Although the waterwheel devices 10 illustrated in FIGS. 1 and 2 are mereexamples, a rotor 12 is fixedly provided at a distal end of anon-illustrated rotor shaft supported inside each waterwheel casing 11.A suspension pipe 13 is fixed to an upper portion of each waterwheelcasing 11 and a power generator 14 is disposed at an upper end of thesuspension pipe 13.

A non-illustrated transmission shaft disposed inside each suspensionpipe 13 is joined to the rotor shaft and a rotary shaft of the powergenerator 14. A duct 15 is disposed so as to surround each waterwheelcasing 11.

An inclined portion 12B inclined in the upstream direction is formed atan edge of each lift-type blade 12A of each rotor 12.

The inclined portion 12B is configured so as to, upon rotation, receivea water flow of water hitting the lift-type blades 12A and therebyscattered in a centrifugal direction to enhance a torque.

Each duct 15 is fixed to a lower end portion of each suspension pipe 13,and inside the duct 15, the relevant waterwheel casing 11 is safely andfirmly fixed and a flow speed inside is enhanced.

A non-illustrated horizontal sectional shape of each suspension pipe 13is a fish-like shape in which a front portion is thick and a rearportion is thinner. A plate-like suspension lock fitting 17 is fixed toa position in an upper position in each suspension pipe 13 at which thesuspension pipe 13 is in contact with an upper surface of the floorplate 6. Each suspension lock fitting 17 is suspended on, screw-fastenedand thereby fixed to a part around the relevant holding hole 6B of thefloor plate 6.

Hooks 17A that hold a towing cable when the relevant waterwheel 10 islifted up/down 17A are provided at an upper surface of each suspensionlock fitting 17. Also, a slanted support rod 16 for preventing shakingof the relevant waterwheel casing 11 is fixed between a rear portion ofeach relevant suspension pipe 13 and a front surface of the relevantsuspension main body 2 on the downstream side of the waterwheelsuspending device 1. After the waterwheel devices 10 are disposed in thewaterwheel suspending device 1, the power generators 14 are connected tothe respective upper ends of the suspension pipes 13.

FIG. 8 is a perspective view illustrating another embodiment of aholding body 3. Parts that are the same as those of the precedingembodiment are provided with symbols that are the same as those of thepreceding embodiment and description thereof will be omitted. Theholding body 3 in embodiment 2 includes a groove-like fitting portion 3Bin which an extremity portion of a suspension main body 2 is to beinserted from above, and thus even if the suspension main body 2 isrelatively long, the suspension main body 2 can be fitted and fixed inthe fitting portion 3B.

FIG. 9 is a perspective view illustrating another embodiment of afooting. Parts that are the same as those of the preceding embodimentare provided with symbols that are the same as those of the precedingembodiment and description thereof will be omitted. The footing 5 inthis embodiment includes a lower portion of an anchor portion 5B, thelower portion being formed so as to be larger than an upper portion, andthus is favorable in stability. The footing 5 includes non-illustratedreinforcing steel bars buried inside and thus have high rigidity.

As described above, it is only necessary to form a concrete bottom slab8 on the bottom of each foundation hole 7, dispose a footing 5 on theconcrete bottom slab 8 and put soil back into the foundation hole 7 tofill the foundation hole 7, which is excellent in ease of work.

The holding body 3 or an end portion of the suspension main body 2 candirectly be fixed to threaded rods 5C in the upper surface.

Although the suspension main bodies 2 having a pipe-like shape areshown, the shape of the suspension main bodies 2 in the presentinvention is not limited to this shape, and, for example, an H-shapedsteel material or a steel material having any of other arbitrary shapecan be used, and a joining element of an outer-fitting type, the joiningelement having a shape conforming to a sectional shape of the steelmaterial, is selected.

INDUSTRIAL APPLICABILITY

In a waterwheel suspending frame device of the present invention, acombination of necessary members is included and a length of asuspension main body can be adjusted, and thus, the waterwheelsuspending device can easily be provided so as to bridge a water channeleven at any of sites having different water channel widths and thus isexcellent in ease of work and can effectively be used in installation ofa hydropower generator in, e.g., a flume.

DESCRIPTION OF SYMBOLS

1: waterwheel suspending frame device

2: suspension main body

2A: pipe hole

2B: bolt hole

3: holding body

3A: base

3B: fitting portion

3C, flange

3D, 3E: bolt hole

4: joining element

4A: bolt hole

5: footing

5A: mount portion

5B: anchor portion

5C: threaded rod

6: floor plate

6A: installation hole

6B: holding hole

7: foundation hole

8: bottom slab

9: concrete base

10: waterwheel device

11: waterwheel casing

12: rotor

12A: lift-type blade

12B: inclined portion

13: suspension pipe

14: power generator

15: duct

16: slanted support rod

17: suspension lock fitting

G: ground

R: water channel

1. A waterwheel suspending device that is a support device transverselyprovided so as to bridge a water channel to suspend a waterwheel, thedevice comprising: a combination of spliceable suspension main bodiesarranged in parallel on an upstream side and a downstream side of thewater channel, respectively, a plurality of footings for horizontallysupporting respective end portions of the suspension main bodies outsidethe water channel, and a floor plate stretched across upper surfaces ofthe suspension main bodies.
 2. The waterwheel suspending deviceaccording to claim 1, wherein a holding body which includes a fittingportion that maintains an end portion of the relevant suspension mainbody horizontally is provided on an upper surface of each of thefootings.
 3. The waterwheel suspending device according to claim 1,wherein a mount portion for fixing the relevant holding body is formedon an anchor portion of each of the footings.
 4. The waterwheelsuspending device according to claim 1, wherein each of the footingsincludes a threaded rod provided in an upright manner in an uppersurface of the relevant mount portion.
 5. The waterwheel suspendingdevice according to claim 1, wherein each of the suspension main bodiesis configured so that a plurality of suspension main bodies are joinedin series via a joining element.
 6. The waterwheel suspending deviceaccording to claim 2, wherein a mount portion for fixing the relevantholding body is formed on an anchor portion of each of the footings. 7.The waterwheel suspending device according to claim 6, wherein each ofthe footings includes a threaded rod provided in an upright manner in anupper surface of the relevant mount portion.
 8. The waterwheelsuspending device according to claim 7, wherein each of the suspensionmain bodies is configured so that a plurality of suspension main bodiesare joined in series via a joining element.
 9. The waterwheel suspendingdevice according to claim 3, wherein each of the footings includes athreaded rod provided in an upright manner in an upper surface of therelevant mount portion.
 10. The waterwheel suspending device accordingto claim 9, wherein each of the suspension main bodies is configured sothat a plurality of suspension main bodies are joined in series via ajoining element.
 11. The waterwheel suspending device according to claim2, wherein each of the footings includes a threaded rod provided in anupright manner in an upper surface of the relevant mount portion. 12.The waterwheel suspending device according to claim 2, wherein each ofthe suspension main bodies is configured so that a plurality ofsuspension main bodies are joined in series via a joining element. 13.The waterwheel suspending device according to claim 3, wherein each ofthe suspension main bodies is configured so that a plurality ofsuspension main bodies are joined in series via a joining element. 14.The waterwheel suspending device according to claim 4, wherein each ofthe suspension main bodies is configured so that a plurality ofsuspension main bodies are joined in series via a joining element.